Thermostatic control for ovens



` 1,619,505 March l, 1927. F. A GAUGE-R THERMOSTATIC CONTROL FOR OVENS Filed Dec. 22. 1924 Ziff. Z.

FJ/'i/ raf? L' Er.'- 2%@ Patented Mar. 1, 1927. a UNITED STATES 11,619,505 PATENT OFFICE.

`FRANK A. GAUGEB, Ol' EILWAUKEE, WISCONSIN, ASSIGNOB T0 TIME-O-STAI CORPORA- TION, `0F MILWAUKEE, WISCONSIN, A CORPORATION 0F WISCONSIN.

THERMOSTATIC CONTROL FOR OVENS.

Application nled December 22,1924. Serial No. 757,445.

This invention relates to thermostatic control for the ovens of as ranges.

Thermostatic controls` or gas ovens have been provided, but in devices thus far produced it has been necessary to employ additional piping and fittings in order to connect the gas supply with the thermostatic element. This has resulted in an ex ensive construction both for material and or the labor involved in assembling it.

This invention is designed to overcome these defects, and objects of the invention are, therefore, to provide a thermostatic control for gas ovens which may be attached to the usual burner supply header, which extends horizontally across the front of the range, and to so construct this control unit that it is applicable to and easily positioned within the conventional type of gas oven with a minimum ot change and without requiring any additional fittings or piping whatsoever. More specifically, this invention has for its object to provide a thermostatic control unit which may be attached directly to the end of the usual burner supply header, and which will project diagonally into the oven preferably between the lining and the side wall thereof.

An embodiment of the invention is shown in the accompanying drawings, in which :-l

Figure 1 is a partially develo ed section through the device and oven an through a portion of the oven burner manifold.

Figure 2 is a transverse sectional view through the oven showing'the position of the device with reference to the'main body of the oven. 4

. Figure, 3is a fragmentary sectional view artly broken away, on the line 3 3 of iure 1. v

eferring to the drawings, it will be seen that the usual burner supply header 1 has been shown which normally supplies the burnersfor the to portion of the range one of whose manifol s is indicated at 2. This header also normall supplies the burner 3 for the oven,.`such urner having its manifold indicated at` 3. In the usual type of range, the oven is positioned adjacent theA end of the burner supply header 1, as shown in Figure 1, and this oveli usually consists an inner lining/5 spaced of an outer wall 4 which lmay be either single or double and is usuall provided with om such outer wall and terminating at a material distance manifold 3. As shown in Figure 1 it 'pref erably consists of a bod portion 9 whlch is screwed directly upon t e end of the header 1 if the header is of such length as to correctly position the unit.` If, however, the

header extends slightly beyond the correct position for the unit, the extreme end is sawed o and is threaded and the unit is screwed upon such end. This main body portion is provided with a main suppl duct 10 and with a valve seat 11 provided` with a plurality of apertures 12 arranged in a ring. From these aperturesthe gas passes through a duct 13 to the nozzle 8. The flow of gas throu h the apertures'12 is controlled by means o an annular valve 14 which is provided with a groove in its annular face,

as shown, and which is provided with a plu.

rality of apertures 15 communicating with its central portion, as shown clearly in Fi ures 1 and 3. This valve is yieldingly hed in place'b means of a spring 1 6. The valve is adapte to be unseated b means of 'a rod 17 carried in a tube 19 an ri 'dl and detachably connected with sai tu e at its outer end by means of the cap 19. This rod 17 is rovided with a shoulder which contacts wlth the valve 14 and under redetermined conditions overcomes the actions of the spring 16 and unseats the valve. In fact this apparatus may be of any desired type such or instance as that disclosed in my Patent Number 1,569,474, issued to me January 12, 1926, for oven regulator. The

' adjustment of the device is secured by kmeans of a hand wheel 20 which is screwed fast to a shaft 21 which is `preferably prvided with a rectangular aperture adaptedto receive the rectangular` end 22 of the rod 17, as shown in Figure 1.

In order to positonthe thermostatic element within the oven, a small hole 23 is bored through the marginal front edge strip 6 adjacent its lower portion, and the element projects upwardly and diagonally into the oven through this a rture 23, as shown clearly in Figures 1 an Ai?.

Due to this construction all additional piping and all additional fittings are avoided and the thermostatic unit is screwed directly to the usual burner supply header 1 rejects directly into the oven without any intermediate mechanism or piping.

It is to be understood that a. valve such as shown at 24, for instance, may be interposed in the as supply line intermediate the thermostatically controlled valve 14 and the manifold 2 for controlling the flow of gas to the oven burner. The oven pilot burner duct or pi is shown at 25 extending from the t ermostatic valve easing through the front wall of the burner compartment and terminating in gniting relation to the oven burner as shown at 25, This pilot burner pipe communicates with the `interior of the thermostatic valve' casing on the snp ly side of the valve 14 so as to be supplied) with gas all the time valve 24 is open, regardless of the position of the valve 14.

It is to befparticularly noted that due to the diagonal arrangement of the thermostatic element in the oven wall that an average temperature of the' entire oven is secured. This-is not the case with thermostatic elements positioned transversely of the oven no matter where they are located. If they extend across the oven parallel to the door ot the oven, they will be in a zone of heat materially different from that existing in other ortions of the over. If, however, asin t is invention,"'the thermostatic element is positioned diagonally of the oven and extendm from the ront to the rear, it is clear that it asses through several zones of heat and reglsters accurately the average temperature of the oven.

It is to be noted particularly that this thermostatic element is not positioned adjacent thei up er portion of the oven door where it wou d be subjected to very great fluctuations in temperature in opening and closing the door even for brief intervals and consequently could not, because of these conditions, register the average temperature of the oven.

It is to be noted further. that due to the peculiar diagonal arrangement of the thermostatic element that it is possible to attach the element directly to the actual header directly in front of the oven, and it is not necessary to attach it to any of the side su ply pipes'for the oven.

Furt er, by means of the diagonal arrangement disclosed in this invention, it is possible to employ rigid expansible members for the thermostatie element. as these members project directly from the thermostatic control may be most readily applied to existing types of gas ranges with a minimum of change and with a minimum of expense.

Although the invention has been described in considerable detail, it is to be understood that the invention may be variousll embodied and is, therefore, to be limite only as claimed.

I claim:

1. In a gas range, the combination of a burner su ply header, an oven located adjacent sais header, a burner for said oven, and a thermostatc control unit for the oven burner, said unit being directly attached to said header and extending diagonally into said oven and positioned closely adjacent a vertaal wall thereof.

2. In a gas range, the combination of a burner supply header, an oven located adjacent said header, a burner for said oven, a thermostatic control unit for said burner said unit being attached to said header and extending diagonally into said oven, said oven having walls with linin spaced therefrom and said thermostatio e ement extending between a lining and the corresponding wall. v 3. In a gas rantge the combination of a burner supply hea er, an oven located adjacent one end of said header, a burner for said oven, said oven having a side wall and` a lining spaced therefrom and having a marginal edge strip adjacent the door and extending from said side wall across the front edge of said lining, and a thermostatie unit for said burner, said unit being attached directly to said header' and extending npwardly and diagonally into said oven between said lining and said wall and through said marginal edge strip.

4. ln a gas range the combination of a burner Supply header extending horizontally across the front of said range, an oven located adjacent one end of said header and having a side wall and a lining and having 4a marginal strip extending across the front edge of said liner and said side wall. a burncr for said oven. and a unitary thermostatic device screwed directly upon the end of said header and controlling 'said burner, said thermostatic device having an elongated tubular device extending through the lowei edge of said marginal strip and extending diagonally into said oven between said lining and said side wall.

5. In a gas ran e the 4combination of a burner su ply hea 'er an oven located adjacent sai hheader, a'li and a thermostatic control unit for said oven burner, said unit being directly attached tu said header and extending diagonally into the oven and positioned closely adjacent a vertical wall, said element includ' rigid thermostatic members extendingH `rectly from the portion of the 'unit` attached to said header and projecting along a diagonal line into the oven.

6. The combination with a gas stove having the usual cooking top, oven adjacent* thereto, supply header extending along in front of t e cooking top and'. terminating near the oven, and burner manifolds leading from said header; of a thermostatic control device mounted on the end of said header adjacent the ovenA and comprising a valve casing, a valve therein, a connection between the casing and the oven burner manifold, and an e ongatedthermostat extending coaxially with said valve upwardly at anangle into said oven adjacent one -of the vertical walls thereof, said thermostat operating to act-nate and control said valve. j

7. The combination with a gas stove hav ing the usual cooking top, loven adjacent` thereto, supply header extending along in front of the cookingitop and terminating near the oven, and burner manifolds leadin from said header; of a thermostatic contro device mounted on the end of said headerv adjacent the oven and comprising a valve casing, a valve therein, a connection between the casin and the oven burner manifold, an elongate rod for actuatin said` valve, said rod extending co-axially with said valve upwardly at an angle into said oven adjacent one of the vertical walls thereof` and an expansble element subject to the heat of the oven for actuating saici rod.

8. ln a device of the character described, the combination with a stove having an oven, a supply header, an oven burner and a manifold leading to said burner from a point laterally adjacent said header, of a ported valve casing in communication with said.

header and vsupported therefrom ina position offset from said manifold along the header, a valve within the casing, a return connection affording direct communication between the casing and the manifold in the normal operation of the latter, a thermostat having a heat sensitive portion within the oven and extending substantially co-axially with said valve upwardly and rearwardly therefrom and serving to control andregulate the same.

9. In a device of the character described, the combination with a cabinet gas range including a plurality of burners, a supply urner for said oven, 1n

header extending across said range in front of said' burners, .an oven above one of said burners and provided with a door and a side wall adjacent the doorand'a manifold leadtolsa'd last mentioned burner from a' pomt adjacent said header, of a valve casing supported from said,header and having an inlet port in communication therewith and having an outlet port in communication with said manifold, a valve within said casing, a. theromstat' extending at .an upwardly inclined anglelfrom said casing and entering said oven between said door and said wall, and serving to regulate and control said valve. v

10. The combination with the supply header of a gas stove and a nearbyoven havin a single aperture in its frame, of a valve casing sup rted fromvthe header, and a thermostat or o erating said valve, said .thermostat exten ng upwardly and rearwardly from said casin -co-airially of said valve and throughsai aperture into ,the interior of said oven adjacent one of the vertical walls thereof.

11. In a device of the character described, `the'combination with 'a gas stove having a supplyA header, an oven provided with a door frame having an` aperture therein, and a manifold leading beneath said oven; of

a valve casing in communication with saidheader and said manifold and supported from said header in a position directly in front of the apertured rtion of said frame a valve within said casing, and an elongated tubular thermostat for operating and controlling said valve, sai-d thermostat being supported by said casing and extending upwardly and rearwardly therefrom through said a erture into the interior of said oven.

12. e 'combination 4with a gas stove havin an oven provided with an apertured door rame, an oven manifold and a supply header extending across the front of said stove and terminating adjacent the front of said oven and therebeneath, of a manually operable gas cock applied to theend of said header, an automatic gas connected with said first mentioned gas cock and provided with a valve controlling communication between said first mentioned as cock and said manifold, a thermostat wit in saigl oven for o rating said valve, said thermostat extendiiiig .angularly 'downwardliv and forwardly in a straight line to sai automatic gas cock and supported thereby.

13. The combination with a cabinet gas range, com rising a cooking top having a plurality o burners therebeneath, an oven at` one side of the cooking top, a supply header extending across the front of the cooking to a burner beneath said oven, a manifoldleading from intermediate portions of said header to the several burners aforesaid, of a valve casing applied to said `fronofte 15. The Qomhm the usu'a-lYA naar the oven, ing froth-said jf. control devicefmijn municating with 'said ing a valve casngi a normally urging; ill lie V a connection betweentlielasgzg and 4the eement Vand serving. t'o therefrom to, said' val-ve" to a" Die the latter.

jltl claim the foregoing Y set my hand at Milwaukee.

inl-the',couiiiajiofMilwaukee and State of FRANK A. GAUGER.

of a valve casi-n Yam mlm within seid.

oaid rod' engaging Vsxiiil header in front of one side of said oven and communicating with the manifold leading to the oven burner aforesaid, and a thermostat for operating said valve, said thermostat being carried by said casing and extending upwardly and rearwardly therefrom substantially co-axially of said valve and into said oven.

14. In a device of the character described, the combination with an oven having an a rture therein, of a valve casing fixed wit i reference to said oven in a position in advance thereof and below said aperture, a valve within said casing, a heat responsive element disposed within the oven, and a rod co-axial with said valve projectupwardly and rearwardly from said casing in aVV substantially straight vline through said aperture, said rod engaging said heat responsive element and serving to transmit motion therefrom to said valve to control and regulate the latter.

15. The combination with a gas stove having the usual cooking top, oven adjacent thereto, su ply header extending along in front of t e cooking top and terminating near the oven, and burner manifolds leading from said header; of a therlnostatic control device adjacent the oven and communicating with said header and comprising a valve casing, a valve therein, a spring normally urging said valve in one direction, a connection between the casing and the Certificate of Correction.

mutuos oven burner manifold, an elongated rod for actuating said valve in opposition to said spring, said rod extending co-axially with said valve upwardly at an angle into said oven adjacent one of the vertical walls thereof, and an expansible element subject to the heat of the oven for imparting the valve actuating movements to said rod.

16. In a device of the character described, the combination with a gas range including a plurality of burners, a suppl header extending across said range in ront of said burners, an oven above one of said burners and provided with a door and a side wall adjacent the door, and a manifold leading to said last mentioned burner from a point adjacent said header; of a valve casing supported in communication with said header and having an outlet port in communication with said manifold, a valve within said casing, a heat responsive element disposed within the oven, and a rod co-axial with said valve projecting at an angle from said casing and entering said oven between said door and said wall, said rod engaging said heat responsive element and serving to transmit motion therefrom to said valve to control and regulate the latter.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of Wisconsin.

FRANK A. GAUGER.

Granted March 1, 1927, m

FRANKr A. GAUGER.

It hereby certified that error appears in the printed specification oi tne aouvenumbered ,the word gas atent requiring correct-ion as follows:

insert the word cock,- and that the said line 113, claim 12, after Page 3,

Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ollice.` Signed and sealed this f [um] 12th ny of April,- A. D. am.

*Seriife o hmctien. Patent No. 1,619,505. Y Granted March 1, 1927, bo

FRANK A. GAUGER.

It is hereby certified that error appears in the printed specification oi me aww'- numbered patent requiring correct-ion as foilows: Pag 3, line 113, claim 12, aftar the word gas insert the word coc/c; arid that. the said Letters Patent should be read with this correction therein that the same may conform to the record of th case in the Patent Oce;

4Signed and sealed this 12th day of April; A. D. 1927.

*[BIAL] M. J. MOORE Acting Commc'seovwr of Patents. 

